Grannie,
I am so sorry to hear about your trouble. I know that is frightening and worrisome. I have to jump in on the doctor suggestions. Your GP is a good place to start but If you live in a place large enough to have a geriatric psychiatrist they would be your best bet for evaluation. Geri-psych will know the most about available meds and any interactions. Medications for cognitive decline can slow the progression. The doc can also refer you to a psychologist for neuropsych testing which will give you a baseline for where your memory is now and allow them to make specific suggestions for care and safety issues. It will also help track progression if you ever have a sudden change.
Is there an Area Agency on Aging where you are? They could help with resources.
Hold on to hope, there is help out there.